No doubt about it-- the GR starter from an '84 USA spec FJ60 is absolutely in no way interchangeable with the GR starter in an '88 Latin Spec HJ60. No question about it. Pulled them both off today and tried it out.
I've gotta say, the mounting on the LatSpec HJ60 was a lot better to deal with- nut on top was 17mm head, bolt on bottom is 17mm head, nut connecting big wire... 17mm.
On the FJ it was an 19mm bolt on bottom (?WTF? Aftermarket?) A 17mm nut on top (but the stud spun out, grrrr) and the big wire was held on by a 14mm nut. Stupid. Especially stupid when you are working under the vehicle and there is nobody nearby to hand you a wrench. I was doing frickin calesthenics.
The HJ starter came out easily with the exception of the little rubber boot on the big wire. Darn thing didn't want to budge! I'm glad that I didn't just cut it off, but I was tempted.... very tempted.
According to the Gregory manual, it appears that the early HJ60 starter *might* be the same as an FJ. But the "late" model starter is MUCH larger (and heavier!!).
Got everything opened up ok, and sure enough, the contacts were worn. Actually, I guess I should say the contact was worn. One of them looked nearly new.
But I decided to replace both so I dismantled the contacts, then spent the next couple of hours driving around to various garage-type places, hardware store type places, gas station type places (if you had been here would understand....) but none had what I needed. Did finally find some other contacts that were sorta-kinda similar (not that much, really) and decided to give them a whirl... need the 60 running tomorrow and didn't want to fab my own contacts despite having heard it is pretty easy to do. Here's a pic of the other contacts- they're not *that* different:
Reinstall went smoothly, and the starter works great! Fires up quicker than before and fires on the first try every time (so far). It always started well before once it turned over. I'd like to think it fires up even better now, but it isn't that much of a difference. Certainly no worse.
All in all- if you can find contacts ahead of time (ie: your parts store has a computer and/or a phone) then the whole job shouldn't take more than two hours. Less if you have your tools organized and a clean workbench to do the work on.